When i go out usually i carry out my keys, mobile phone and sometimes when i go work my brief case,... I don't like to carry a wallet in my pocket because i don't bear it so i carry just a necessry with me; my identity card and some money...

It depends on where my go out:P
When I go out for work, I bring my briefcase.
When I go out for shopping, I bring my wallet or purse.
When I go out for short trip, I bring my rucksack and ticket.
Can not be same every time.